New important releases of Maps

[Jonas Danielsson <the sator gmail com>]

Hi!

Sorry to bother you again!

I just release updates for Maps, down to the 3.10-branch:

I release the following:
3.21.90
3.20.3
3.18.4
3.16.4
3.14.4
3.12.4
3.10.4

This update provides a massive speedup from the last versions. By not
using redirect anymore, instead downloading a service file that tells
us where third-party services are located. This is also something
Mapbox requested. Having a redirect did not sit well with them. So
please update!

Another note, if you are the maintainer of GNOME Maps for your
distribution please consider maintaining libchamplain as well. And try
to take the latest version possible. This will help your Maps version
a lot. The next release of libchamplain (0.12.4, unreleased as of now)
will provide speed ups to all versions released today by allowing more
concurrent HTTP requests. So please update if your distro allows!

Thank you
Jonas